Assume That T-Mobile Is Interested in Studying the Pricing Expectations

question 100

Multiple Choice

Assume that T-Mobile is interested in studying the pricing expectations of its customers. If the study calls for selecting at random 100 people from each of three age groupings, ____ sampling is being used.

• A)random
• B)stratified
• C)quota
• D)area
• E)experimental

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Definitions:

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution or a parameter estimation, subtracting the number of parameters estimated.

Correlation Coefficients

Numeric measures that describe the strength and direction of the relationship between two variables.

Direct Correlation

A statistical relationship between two variables where both variables move in the same direction.

Nondirectional Correlation

Nondirectional correlation describes the relationship between two variables without specifying whether the relationship is positive or negative, indicating only that a correlation exists.